his.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
TMS-EEG reveals hemispheric asymmetries in top-down influences of posterior intraparietal cortex on behavior and visual event-related potentials
Department of Psychology, University of Turku, Turun yliopisto, Finland / Centre for Cognitive Neuroscience, University of Turku, Turun yliopisto, Finland.
Department of Psychology, University of Turku, Turun yliopisto, Finland / Centre for Cognitive Neuroscience, University of Turku, Turun yliopisto, Finland.
Department of Psychology, University of Turku, Turun yliopisto, Finland / Centre for Cognitive Neuroscience, University of Turku, Turun yliopisto, Finland.
Department of Psychology, University of Turku, Turun yliopisto, Finland / Centre for Cognitive Neuroscience, University of Turku, Turun yliopisto, Finland.
Show others and affiliations
2017 (English)In: Neuropsychologia, ISSN 0028-3932, E-ISSN 1873-3514, Vol. 107, p. 94-101Article in journal (Refereed) Published
Abstract [en]

Clinical data and behavioral studies using transcranial magnetic stimulation (TMS) suggest right-hemisphere dominance for top-down modulation of visual processing in humans. We used concurrent TMS-EEG to directly test for hemispheric differences in causal influences of the right and left intraparietal cortex on visual event-related potentials (ERPs). We stimulated the left and right posterior part of intraparietal sulcus (IPS1) while the participants were viewing and rating the visibility of bilaterally presented Gabor patches. Subjective visibility ratings showed that TMS of right IPS shifted the visibility toward the right hemifield, while TMS of left IPS did not have any behavioral effect. TMS of right IPS, but not left one, reduced the amplitude of posterior N1 potential, 180–220 ms after stimulus-onset. The attenuation of N1 occurred bilaterally over the posterior areas of both hemispheres. Consistent with previous TMS-fMRI studies, this finding suggests that the right IPS has top-down control on the neural processing in visual cortex. As N1 most probably reflects reactivation of early visual areas, the current findings support the view that the posterior parietal cortex in the right hemisphere amplifies recurrent interactions in ventral visual areas during the time-window that is critical for conscious perception.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 107, p. 94-101
National Category
Neurosciences
Research subject
Consciousness and Cognitive Neuroscience
Identifiers
URN: urn:nbn:se:his:diva-14668DOI: 10.1016/j.neuropsychologia.2017.11.012ISI: 000418986600011PubMedID: 29137988Scopus ID: 2-s2.0-85034029674OAI: oai:DiVA.org:his-14668DiVA, id: diva2:1176291
Available from: 2018-01-22 Created: 2018-01-22 Last updated: 2018-01-23Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMedScopus

Authority records BETA

Revonsuo, Antti

Search in DiVA

By author/editor
Revonsuo, Antti
By organisation
School of BioscienceThe Systems Biology Research Centre
In the same journal
Neuropsychologia
Neurosciences

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 15 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf